Results 1 to 7 of 7
  1. #1
    Join Date
    Dec 2006
    Location
    Indonesia
    Age
    68
    Posts
    37
    Rep Power
    0

    How to calculate condensing unit and cooling coil?



    Hi all,
    I am looking for the formula to calculate the proper condensing unit for 75,000 BTU and the cooling coil for 65,000 BTU? Is there a simple way for it?
    Thank you.



  2. #2
    Join Date
    Dec 2006
    Location
    Indonesia
    Age
    68
    Posts
    37
    Rep Power
    0

    Re: How to calculate condensing unit and cooling coil?

    Anyone?

  3. #3
    Join Date
    May 2007
    Location
    Auckland
    Age
    67
    Posts
    3,362
    Rep Power
    31

    Re: How to calculate condensing unit and cooling coil?

    What is the application temps, and ambient temps, single compressors or multi compressors. More information would get a few responses.

  4. #4
    Join Date
    Aug 2009
    Location
    New Zealand
    Age
    53
    Posts
    2,556
    Rep Power
    20

    Re: How to calculate condensing unit and cooling coil?

    I would use this formula

    a = duty
    b = size of condensing unit at working conditions





    a=b

    normally works for me.

    Damn that is the metric version

    Try this for imperial

    b=a
    Last edited by mad fridgie; 20-01-2012 at 03:04 AM.

  5. #5
    Join Date
    May 2006
    Location
    India
    Age
    67
    Posts
    400
    Rep Power
    12

    Re: How to calculate condensing unit and cooling coil?

    INFO REQUD :
    SST :
    DST :
    REFRIGERANT TO BE USED:
    REFRIGERATION LOAD :
    FIRST SELECT A COMPRESSOR .........
    THEN RAISE THE SUCTION SAT TEMP BY ABOUT 7 TO 10 DEG C .....
    FIND OUT THE HEAT REJECTED AT THE CONDITION & THAT WILL BE THE CONDENSER HEAT REJECTION
    GIVE THE CONDITIONS & WILL WORK OUT A COD UNIT FOR YOU
    FOR ANY HELP FURTHER SEND ME A PM : ddk0123@gmail.com

  6. #6
    Join Date
    Oct 2003
    Location
    Belgium
    Age
    55
    Posts
    5,516
    Rep Power
    27

    Re: How to calculate condensing unit and cooling coil?

    MF, I think you made a fault. It's not b=a for metric but b= c...or was it c=b...mmm...too long i used this formula
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  7. #7
    Join Date
    Aug 2009
    Location
    New Zealand
    Age
    53
    Posts
    2,556
    Rep Power
    20

    Re: How to calculate condensing unit and cooling coil?

    Peter
    Always will to accept alternative theories, especially when I am wrong!, so I will have to spend weeks re-writing all my software programs, to ensure that these complex calculations are correct and up to date.
    Thank you "O Masterful One"
    PS; Happy New Year

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •